如下小程序：
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main()
{
vector<string> v;
string s;
char* p="!";
while(cin>>s)
{
v.push_back(s);
if(strcmp(s,p)==0)//编译时这句有错，error C2664: 'strcmp' : cannot convert parameter 1 from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'const char *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
Error executing cl.exe.
break;
}
return 0;
}

#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main()
{
vector<string> v;
string s;
char* p="!";
while(cin>>s)
{
v.push_back(s);
if(strcmp(s,*p)==0)//改过来也是不行的，
break;
}
return 0;
}
或者这样都不可以的
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main()
{
vector<string> v;
string s;
while(cin>>s)
{
v.push_back(s);
if(strcmp(s,"!")==0)
break;
}
return 0;
}

上面两个都产生了这样的错误：
\新建文件夹\Cpp11.cpp(12) : error C2664: 'strcmp' : cannot convert parameter 1 from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'const char *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
Error executing cl.exe.

Cpp11.obj - 1 error(s), 0 warning(s)

To:师妃暄,你帮我调试一下这个程序，不用修改，只要告诉我哪个地方错了，就可以，谢谢你
#include <string>
#include <iostream>
using namespace std;
int main()
{
char*p1="as";
char s[9];
cin>>s;
char* p2=s;
while(strcmp(p1,p2)>0)
strcpy(p1,p2);
cout<<p1<<endl;
return 0;
}

我说怎么上不了，把用户名输到密码里去了，真笨啊

名人，在帮我一下

#include <string>
#include <iostream>
using namespace std;
int main()
{
char*p1="as";//我在这边已经给p1初始化了，也就是给他分配了内存空间了
char s[9];
cin>>s;
char* p2=s;
while(strcmp(p1,p2)>0)//为什么在这边还要再给他分配空间呢？p1 = new char[10];
strcpy(p1,p2);
cout<<p1<<endl;
return 0;
}

再说一次谢谢你